20111413400 has 96 divisors (see below), whose sum is σ = 50478800400. Its totient is φ = 7407628800.

The previous prime is 20111413397. The next prime is 20111413409. The reversal of 20111413400 is 431411102.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111413409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1080170 + ... + 1098630.

Almost surely, 2^20111413400 is an apocalyptic number.

20111413400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20111413400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25239400200).

20111413400 is an abundant number, since it is smaller than the sum of its proper divisors (30367387000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20111413400 is a wasteful number, since it uses less digits than its factorization.

20111413400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18909 (or 18900 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 20111413400 its reverse (431411102), we get a palindrome (20542824502).

The spelling of 20111413400 in words is "twenty billion, one hundred eleven million, four hundred thirteen thousand, four hundred".